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- Xref: sparky comp.protocols.nfs:3175 comp.dcom.isdn:1193 comp.protocols.ppp:1104
- Path: sparky!uunet!think.com!sdd.hp.com!nigel.msen.com!emv
- From: emv@msen.com (Edward Vielmetti)
- Newsgroups: comp.protocols.nfs,comp.dcom.isdn,comp.protocols.ppp
- Subject: Re: Low cost ether/isdn brouters (was PC-NFS PPP Serial/ISDN driver wanted)
- Followup-To: comp.dcom.isdn,comp.protocols.ppp
- Date: 21 Jan 1993 17:09:33 GMT
- Organization: Msen, Inc. -- Ann Arbor, Michigan
- Lines: 32
- Message-ID: <1jmlcrINNqkk@nigel.msen.com>
- References: <1993Jan21.151029.13640@gandalf.ca>
- NNTP-Posting-Host: garnet.msen.com
- X-Newsreader: TIN [version 1.1 PL8]
-
- Dave Carr (dcarr@gandalf.ca) wrote:
-
- : Interesting. Could you tell me more. With ISDN, we are basically talking
- : about a point-to-point link. Our view is with the right software mods, you
- : can get the desired performance out of a bridge. The trickiest part is the
- : handling of multicast and broadcast. If we can eliminate these packets
- : without doing the entire routing function, do we have what you need?
-
- We are running people into a public network - for that reason we need
- to do traffic isolation right away. They typically have not one
- host but 5 or 10 or 50 that are supported over a dial up line,
- and they route traffic internally on their net. These are connections
- that want to do serious filtering and access limitations to their
- net, and there is *no* way that they are going to bridge their net
- to ours.
-
- There is no way that a bridge works in this scenario - to get the
- proper flows you'd need to wedge a router interface in there
- somewhere anyways on each end. So I suppose you could go
- router-ethernet bridge isdn isdn bridge ethernet-router
- but that's just silly.
-
- If you really have a point-to-point link then I'm going to run
- PPP over it. If you instead have a subnetwork of some sort then
- I suspect that frame relay is the right frame of mind to take.
- But a bridged ethernet really doesn't match the Internet network point
- of view. (Not to say there aren't good places for it! Just not
- here!)
-
- Edward Vielmetti, vice president for research, Msen Inc. emv@Msen.com
- Msen Inc., 628 Brooks, Ann Arbor MI 48103 +1 313 998 GLOB
-
-